Fatigue of railway axles is one of the basic problems of fatigue. However, in spite of the criticality of this component, modern approaches have not been used for addressing a critical revision of traditional design. The scope of this paper is to study the scale effects in fatigue limit and in crack growth rate for a high strength steel used for high speed railway axles. Fatigue limit tests on micro-notched specimens led to the determination of fatigue thresholds for small cracks of the examined steel. This allowed us to successfully analyse the 'scale effect' and the fatigue strength of full-scale axles in terms of threshold stress for short cracks emanating from small non-metallic inclusions. A series of crack propagation tests on small scale specimens lead to the definition of an EPFM crack propagation model which has been successfully compared with propagation data on full-scale components. These results support the application of the crack propagation model for the determination of axle inspection intervals.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Fracture mechanics and scale effects in the fatigue of railway axles


    Beteiligte:
    Beretta, Stefano (Autor:in) / Ghidini, A. (Autor:in) / Lombardo, F. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2005


    Format / Umfang :

    14 Seiten, 19 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    The Fatigue Strength of Railway Axles

    Benyon, J. / Kay, C. J. / Young, A. T. et al. | British Library Conference Proceedings | 1992


    Fracture mechanics assessment of railway axles based on experimental and computational investigations

    Luke, M. / Varfolomeyev, I. / Lütkepohl, K. et al. | Tema Archiv | 2009


    Research on corrosion fatigue of railway axles

    Carboni, M. / Beretta, S. / Lo Conte, A. | Tema Archiv | 2011


    Fatigue Crack Growth Simulation in Railway Axles

    De Iorio, Antonio ;Grasso, Marzio ;Penta, F. | Trans Tech Publications | 2011


    Simulation of fatigue crack propagation in railway axles

    Beretta, S. / Carboni, M. | Tema Archiv | 2005